Updated build status image

Author: hoshomoh

README.md

@@ -1,6 +1,4 @@
-<a href="https://travis-ci.org/hoshomoh/CSVUtils">
-    <img src="https://travis-ci.org/hoshomoh/CSVUtils.svg" alt="Build Status">
-</a>
+[![Build Status](https://travis-ci.org/hoshomoh/CSVUtils.svg?branch=master)](https://travis-ci.org/hoshomoh/CSVUtils)
 <a href="https://codecov.io/gh/hoshomoh/CSVUtils">
     <img src="https://codecov.io/gh/hoshomoh/CSVUtils/branch/master/graph/badge.svg" alt="Codecov" />
 </a>